Environment-friendly mud high-efficiency dehydration conditioner, preparation process and application process thereof

Abstract

The application discloses an environment-friendly high-efficiency dehydration conditioner for mud, and is characterized in that the conditioner comprises the following components: a gelling agent, an air entraining agent, a pore forming agent, an adjusting agent and a dispersing agent; wherein the mass percentage of the gelling agent is 80-90%, the mass percentage of the air entraining agent is 0.5-2%, the mass percentage of the pore forming agent is 0.05-0.2%, the mass percentage of the adjusting agent is 5-10%, and the mass percentage of the dispersing agent is 0.5-2%. The environment-friendly high-efficiency dehydration conditioner for mud can be used for conditioning mud produced in river and lake dredging and engineering construction, reduces the specific resistance of the mud, and greatly improves the mechanical dehydration efficiency of the mud. Meanwhile, the mechanical properties of the mud cake produced are excellent, the mud cake can be used for backfilling or garden soil, the tail water produced is neutral, the water quality is excellent, and the tail water can be directly discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environment-friendly mud high-efficiency dewatering conditioner. More particularly, the present application relates to an environment-friendly mud high-efficiency dewatering conditioner, a preparation process thereof and an application process thereof. BACKGROUND

[0002] Dredging is an important means to improve and restore the environment of rivers, lakes, reservoirs and other water bodies, and has been widely used in the treatment and ecological restoration of water environment in China. The dredging sludge contains a large amount of inorganic matter, organic matter, trace elements and other substances. If not properly treated, it will cause secondary pollution to the environment. Engineering mud is a necessary auxiliary material in the construction process of construction projects, which is widely produced in the processes of piling, drilling, shield construction and other processes in building construction, and plays the role of mud wall protection, lubrication of drill bit and carrying of drill cuttings out of the hole. Therefore, after the completion of construction operation, the abandoned mud often mixes with surface soil, silt and rock, resulting in complex composition of abandoned mud.

[0003] The dredging sludge and the engineering abandoned mud have the characteristics of high water content, high specific resistance and difficult sedimentation. The common mud treatment methods include landfill, incineration, composting and solidification. However, incineration consumes a large amount of energy and needs to transport the sludge to the incineration site, which has a high economic cost. Composting has certain requirements for the element content in the sludge, and the biological reaction required for composting takes a long time, which is only suitable for the treatment of dredging sludge and not suitable for the treatment of engineering mud. Landfill is carried out after the sludge is dewatered and reduced in amount, but it occupies a large amount of land space. Plate and frame filter press is a widely used mud treatment method because the dewatered mud cake has low water content and the dewatering is thorough. However, the dredging sludge and the engineering mud are both dispersed suspension systems formed by micron-sized silicate and aluminate mineral particles, which have negative electric properties. The surface of clay particles in the mud is composed of a double electric layer structure of adsorption layer and diffusion layer. Therefore, due to the electrostatic repulsion between particles in the abandoned mud, the mud is not easy to settle for a long time. The plate and frame dewatering is affected by the resistance between suspended particles, and the dewatering efficiency is low, which poses a great challenge to the reduction of the mud.

[0004] Therefore, in the current engineering, lime is usually used to condition the mud. The Ca(OH)2 and CaCO3 crystals and particles generated by the reaction of CaO are used to destroy the colloidal structure of the mud, and at the same time, a rigid skeleton is formed in the mud as a water permeable channel to reduce the dewatering resistance and improve the dewatering efficiency. However, the pH of the mud cake after lime conditioning is high, the strength is low, and the mud cake is easy to be mudified, which makes it difficult to be disposed and utilized subsequently. The pH of the tail water generated is greater than 12, which is alkaline, and needs to be treated by special water treatment equipment, increasing the construction cost. SUMMARY

[0005] To achieve these objects and other advantages in accordance with the present application, one aspect, there is provided an environmentally friendly mud high-efficiency dehydration conditioner, comprising the following components: gelling agent, air entraining agent, pore forming agent, regulator and dispersant; wherein the mass fraction of the gelling agent is 80-90%, the mass fraction of the air entraining agent is 0.5-2%, the mass fraction of the pore forming agent is 0.05-0.2%, the mass fraction of the regulator is 5-10%, and the mass fraction of the dispersant is 0.5-2%.

[0006] Preferably, the gelling agent is composed of steel slag powder, fly ash, red mud and phosphogypsum.

[0007] The steel slag powder has a particle size of 10-20 μm and mainly contains calcium, iron, silicon and magnesium oxides, and has certain gelling property.

[0008] The fly ash is first grade or second grade fly ash and mainly contains silicon and aluminum oxides, and participates in the hydration reaction.

[0009] The red mud has a particle size of 50-200 μm and is a by-product of an aluminum plant, mainly containing silicon, aluminum and iron oxides, and has gelling property. The soluble alkali in the red mud can stimulate the activity of the steel slag and fly ash, promote the hydration reaction process, and improve the generation speed, strength and toughness of the water-permeable channels.

[0010] The phosphogypsum has a particle size of 75-150 μm and is a by-product of a phosphate fertilizer plant, mainly containing hemihydrated calcium sulfate and dihydrated calcium sulfate. The hydrolysis of the phosphogypsum produces Ca 2+ , which replaces the K + , Na + on the surface of clay particles in the mud through ion exchange, reduces the hydration ion radius and the thickness of the electric double layer, and promotes the coagulation and concentration of the clay particles. Meanwhile, the phosphogypsum participates in the hydration reaction, promotes the formation of hydrated calcium aluminate, and has micro-expansion and early strength properties, thereby promoting the formation and strengthening of the water-permeable channels.

[0011] The steel slag powder, fly ash, red mud and phosphogypsum have certain synergistic effect and together form the gelling agent component, which occurs hydration reaction in the mud to form a network-like rigid water-permeable channel composed of hydrated calcium silicate, hydrated calcium aluminate and hydrated calcium ferrite, thereby providing mineral skeleton support for the mud dehydration process, reducing the dehydration resistance of the mud, and providing strength support for the mud cake generated in the later dehydration process.

[0012] Preferably, the air entraining agent is a self-made hyperbranched polyamide-rosin air entraining agent. The self-made hyperbranched polyamide-rosin air entraining agent is prepared by the following steps:

[0013] First, the dimethylacetamide dissolved methyl acrylate is added dropwise into the dimethylacetamide dissolved diethanolamine solution in a nitrogen environment at a molar ratio of 1:1, and AB2 monomer is obtained by vacuum distillation; second, the core molecule glycerol is dissolved in dimethylacetamide, and the hyperbranched polyamide is obtained by reacting with AB2 monomer at a molar ratio of 1:21 with p-toluenesulfonic acid as a catalyst; the generated hyperbranched polyamide is synthesized with rosin acid at a molar ratio of 1:1, p-toluenesulfonic acid is used as a catalyst, the reaction temperature is 90℃, and the constant temperature continues to react for 10h to obtain the hyperbranched polyamide-rosin air entraining agent.

[0014] The prepared hyperbranched rosin air entraining agent contains a large number of hydroxyl functional groups at the end, has lower surface tension, and excellent foaming performance; the three-dimensional spatial structure of the hyperbranched polymer greatly improves the foam stability of the air entraining agent. The self-made hyperbranched polyamide-rosin air entraining agent is added to the concentrated mud, and a large number of small closed bubbles are generated in the mixing process, reducing the friction between the mud particles and the friction between the mud and the pipe wall, avoiding the breakage of the alumen flowers formed by flocculation, and promoting the transportation of the concentrated mud in the pipeline.

[0015] Preferably, the pore-forming agent is ultra-fine aluminum powder with a particle size of 1-10μm.

[0016] After the aluminum powder is dispersed into the mud, it reacts with OH- generated by the hydration of the gelling agent component to form H2, which links the closed bubbles generated by the air entraining agent in the escape process, and forms a complex network of pore channels in the mud, making the originally dense mud slurry into a micro-sponge structure, and the specific resistance of the mud is greatly reduced. Under the action of pressure, the free water distributed in the mud can be quickly discharged. At the same time, the comprehensive effect of the air entraining agent and the pore-forming agent also improves the porosity and air permeability of the dehydrated cake, which is beneficial to the regeneration as planting soil.

[0017] Preferably, the regulator is composed of one or more of potassium aluminum sulfate, polyaluminum chloride, and polyferric sulfate.

[0018] SO4 2- , Cl - , Al 3+ , Fe 2+ , etc. produced by the hydrolysis of the regulator will participate in the hydration reaction of the gelling agent component, improve the reaction rate, and promote the formation of early water-permeable lattice; H + produced by the hydrolysis of the regulator will neutralize the excess OH - in the system, reduce the pH of the cake and the effluent; Al(OH)3, Fe(OH)2 colloid and polynuclear complex ions produced by the hydrolysis of the regulator and bridged by hydroxyl groups will promote the rapid flocculation and sedimentation of the suspended small particles in the effluent, reduce the turbidity of the effluent, and improve the water quality of the effluent.

[0019] Preferably, the dispersant is one or more of sodium hexametaphosphate, sodium dodecyl sulfate.

[0020] The dispersant can improve the dispersion of the air entraining agent and the ultra-fine aluminum powder in the mud by surface activity, improve the uniformity of the micro-sponge structure of the mud, and improve the application effect of the conditioning agent.

[0021] In another aspect, a preferred embodiment of the present application provides a preparation process of the environmentally friendly mud high-efficiency dehydration conditioning agent, comprising the following steps: mixing the gelling agent, the air entraining agent, the pore-forming agent, the conditioning agent and the dispersant in the above mass ratio to obtain the target product, the environmentally friendly mud high-efficiency dehydration conditioning agent.

[0022] In another aspect, a preferred embodiment of the present application provides an application process of the environmentally friendly mud high-efficiency dehydration conditioning agent, comprising the following steps:

[0023] S1, after the mud enters the mud pool, a pre-configured flocculating agent solution is added to the mud pool and stirred uniformly, low-concentration mud particles are flocculated and settled to realize concentration, the supernatant is discharged from the upper water outlet pipe of the mud pool, and the concentrated mud is discharged from the mud collecting hopper at the bottom of the mud pool and pumped to the mixer;

[0024] S2, the gelling agent, the air entraining agent, the conditioning agent and the dispersant in the conditioning agent are used as the filter aid A component, the filter aid A component and water are mixed in a mass ratio of (0.5-1):1 to prepare a solution by using a drum mixer, after stirring for 30-60s, the pore-forming agent component is continuously added as the filter aid B component, and is quickly stirred for 15s-30s;

[0025] S3, the concentrated mud is added to the conditioning agent and pumped to the mud dehydration device for mechanical dehydration, the produced mud cake can be used for backfilling or garden soil, and the tail water can be partially reused for conditioning agent slurry preparation.

[0026] The present application at least has the following beneficial effects: the present application provides an environmentally friendly mud high-efficiency dehydration conditioning agent and an application process thereof, which are used for conditioning the mud produced by river and lake dredging and engineering construction, reducing the specific resistance of the mud, and greatly improving the mechanical dehydration efficiency of the mud. The produced mud cake has excellent mechanical properties and can be used for backfilling or garden soil. The produced tail water is neutral and has excellent water quality and can be directly discharged.

[0027] In order to promote the dispersion degree of the trace pore-forming agent component in the concentrated mud and improve the mixing effect, a group of ultrasonic wave generating devices are arranged outside the drum mixer, and the ultrasonic wave auxiliary mixing is started synchronously during the quick stirring process. After the conditioning agent is mixed with the concentrated mud, it is pumped to the mud dehydration device.

[0028] Additional advantages, objects, and features of the application will be apparent from the following description, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Effect comparison of the engineering slurry before and after being conditioned by different conditioning modes in the application.

[0030] Figure 2 Effect comparison of the dredged sludge before and after being conditioned by different conditioning modes in the application. DETAILED DESCRIPTION

[0031] The application will be further described in conjunction with the drawings, so that those skilled in the art can implement the application according to the description and drawings.

[0032] The following description is provided to enable those skilled in the art to implement the application. The preferred embodiments in the following description are only examples, and other obvious modifications can be made by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the application.

[0033] It can be understood that the term 'one' should be understood as 'at least one' or 'one or more', that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term 'one' cannot be understood as a limitation on the number.

[0034] Example 1

[0035] The environment-friendly slurry high-efficiency dewatering conditioner comprises the following components: a gelling agent, an air entraining agent, a pore forming agent, a conditioning agent and a dispersing agent; wherein the mass percentage of the gelling agent is 90%, the mass percentage of the air entraining agent is 2%, the mass percentage of the pore forming agent is 0.2%, the mass percentage of the conditioning agent is 5.8%, and the mass percentage of the dispersing agent is 2%.

[0036] The gelling agent is composed of steel slag powder, fly ash, red mud and phosphogypsum in a mass ratio of 1:1:1:1; the particle size of the steel slag powder is 10-20 μm, the fly ash is first-grade fly ash or second-grade fly ash, the particle size of the red mud is 50-200 μm, and the particle size of the phosphogypsum, which is a by-product of a phosphate fertilizer plant, is 75-150 μm.

[0037] The air entraining agent is a self-made hyperbranched polyamide-rosin air entraining agent.

[0038] The self-made hyperbranched polyamide-rosin air entraining agent is prepared by the following steps: firstly, dimethylacetamide-dissolved methyl acrylate is added dropwise into dimethylacetamide-dissolved diethanolamine solution in a nitrogen environment at a molar ratio of 1:1, and AB2 monomer is obtained through vacuum distillation; secondly, the core molecule glycerol is dissolved in dimethylacetamide, and the hyperbranched polyamide is obtained by reacting with the AB2 monomer at a molar ratio of 1:21, with p-toluenesulfonic acid as a catalyst; the generated hyperbranched polyamide is synthesized with rosin acid at a molar ratio of 1:1, with p-toluenesulfonic acid as a catalyst, and the reaction temperature is 90℃, and the constant temperature continues to react for 10h, to obtain the hyperbranched polyamide-rosin air entraining agent.

[0039] The pore-forming agent is superfine aluminum powder with a particle size of 1-10μm.

[0040] The conditioner is potassium aluminum sulfate.

[0041] The dispersing agent is sodium hexametaphosphate.

[0042] Comparative Example 1

[0043] The difference between it and Example 1 is that the air entraining agent used is a commercially available air entraining agent, specifically an air entraining agent sold by Henan Wanshan New Material Technology Co., Ltd.

[0044] Figure 1 The application example is to compare the effects of the engineering slurry before and after being conditioned by different conditioning methods in the application.

[0045] The engineering waste slurry (specific gravity 1.15g / cm 3 , specific resistance 6.25×10 10 ) generated in the construction of the diaphragm wall is compared in terms of dewatering effect under four different conditions.

[0046] Application Example 1 is direct dewatering of the engineering slurry, Application Example 2 is direct dewatering of the engineering slurry after flocculation and concentration, Application Example 3 is conditioning of the engineering slurry after flocculation and concentration by adding lime, and Application Example 4 is conditioning of the engineering slurry after flocculation and concentration by adding the environmentally friendly slurry high-efficiency dewatering conditioner of Example 1. Application Example 5 is conditioning of the engineering slurry after flocculation and concentration by adding the dewatering conditioner of Comparative Example 1.

[0047] Comparing Application Example 4 with Application Example 1, the specific resistance of the conditioned slurry is reduced by 95.04%, the filter pressing time is shortened by 98.89%, the moisture content of the mud cake is increased by 66.55% (but still meets the requirements for mud cake transportation), the CBR of the mud cake is increased by 504.76%, the pH of the effluent is similar, and the SS of the effluent is reduced by 8.33%. Under the condition of ensuring the effluent quality and meeting the requirements for mud cake transportation, the dewatering efficiency of Application Example 4 is much higher than that of Application Example 1, and the mechanical properties of the mud cake are better.

[0048] Compared with application example 2, the specific resistance of the conditioned mud in application example 4 is reduced by 92.91%, the filter pressing time is shortened by 97.67%, the water content of the mud cake is increased by 9.49% (but still meets the requirement of mud cake transportation), the CBR of the mud cake is increased by 477.27%, the pH of the effluent is neutral, and the SS of the effluent is reduced by 26.67%. Under the condition of meeting the requirement of mud cake transportation, the dewatering efficiency of application example 4 is much higher than that of application example 2, and the mechanical properties of the mud cake are better and the effluent quality is better.

[0049] Compared with application example 3, the specific resistance of the conditioned mud in application example 4 is similar to that in application example 3, the filter pressing time is increased by 4s, but the water content of the mud cake is reduced by 10.42%, the CBR of the mud cake is increased by 262.86%, the pH of the effluent changes from strong alkaline to neutral, and the SS of the effluent is reduced by 67.65%. Under the condition of similar dewatering efficiency, the water content of the mud cake in application example 4 is lower, the mechanical properties are better, and the effluent quality is better.

[0050] Compared with application example 4, the water content of the mud cake, CBR, pH and SS of the effluent in application example 5 are similar to those in application example 4, but the specific resistance of the sludge is increased by 106.45% compared with application example 4. Although it is still greatly optimized compared with application example 1 and application example 2, it has a large gap compared with the effect of lime in application example 3. It is shown that the conventional air entraining agent on the market is not suitable for engineering mud environment. The large amount of air entraining agent escaping from the mud leads to the reduction of the porosity of the micro-sponge structure, and the dewatering efficiency of the conditioning agent is greatly reduced.

[0051] Figure 2 The effects of the dredged sludge before and after being conditioned by different conditioning methods in the present application are compared.

[0052] The dredged sludge (specific gravity 1.08 g / cm 3 , specific resistance 3.48 x 10 11 ) produced by dredging a certain lake is compared with the dewatering effects under four different conditions. Application example 6 is direct dewatering of the dredged sludge, application example 7 is direct dewatering after flocculation and concentration of the dredged sludge, application example 8 is conditioning after flocculation and concentration of the dredged sludge by adding lime, and application example 9 is conditioning after flocculation and concentration of the dredged sludge by adding the environmentally friendly mud high-efficiency dewatering conditioner of the present application. Application example 10 is conditioning after flocculation and concentration of the engineering mud by adding the dewatering conditioner of comparative example 1.

[0053] Compared with application example 6, the specific resistance of the conditioned mud in application example 9 is reduced by 96.55%, the filter pressing time is shortened by 99.10%, the water content of the mud cake is increased by 90.59% (but still meets the requirement of mud cake transportation), the germination rate of the mud cake for planting rye grass is increased by 31.94%, the pH of the effluent is similar, and the SS of the effluent is reduced by 16.67%. Under the condition of ensuring the effluent quality and meeting the requirement of mud cake transportation, the dewatering efficiency of application example 9 is much higher than that of application example 6, and the planting performance of the mud cake is better.

[0054] Compared with application example 7, the specific resistance of the conditioned mud is reduced by 94.06%, the filter pressing time is shortened by 98.21%, the water content of the mud cake is increased by 13.55% (but still meets the requirement of mud cake transportation), the germination rate of the mud cake planted with rye grass is increased by 23.38%, the pH of the effluent is neutral, and the SS of the effluent is reduced by 32.43%. Under the requirement of mud cake transportation, the dewatering efficiency of application example 9 is much higher than that of application example 7, and the planting performance of the mud cake is better and the effluent quality is better.

[0055] Compared with application example 8, the specific resistance of the conditioned mud is similar, the filter pressing time is similar, but the water content of the mud cake is reduced by 13.06%, the germination rate of the mud cake planted with rye grass is increased by 400.00%, the pH of the effluent changes from strong alkaline to neutral, and the SS of the effluent is reduced by 66.22%. Under the similar dewatering efficiency, the water content of the mud cake of application example 9 is lower, the planting performance is better, and the effluent quality is better.

[0056] Compared with example 9, the water content, pH and SS of the effluent of the mud cake conditioned in example 10 are similar to those of example 9, but the specific resistance of the sludge is increased by 158.33% compared with example 9, the filter pressing time is increased by 155.77%, the germination rate of the mud cake planted with rye grass is reduced by 11.58%, and the dewatering efficiency is still much better than that of examples 6 and 7, but the effect of lime is much worse than that of example 8. The conventional air entraining agent on the market is not suitable for the sludge mud environment, and a large amount of air entraining agent escapes from the mud, which reduces the porosity of the micro-sponge structure, and the dewatering efficiency of the conditioning agent is greatly reduced.

[0057] Mechanism: The environmentally friendly mud high-efficiency conditioning agent is added to the flocculated and concentrated mud, and a network-shaped rigid water-permeable lattice is generated through the hydration reaction of the gelling agent and the adjusting agent components, which provides mineral skeleton support for the dewatering process of the mud, reduces the specific resistance of the mud, and neutralizes the excess OH - in the system through the hydrolysis by-product of the adjusting agent, so that the system is neutral, the hydration product remains in the mud cake, and the mechanical properties of the mud cake are greatly improved in the later stage; through the comprehensive action of the air entraining agent, the pore-forming agent and the dispersing agent, the mud becomes a micro-sponge structure, which provides a channel for the rapid removal of free water, and the rigid water-permeable lattice and the micro-sponge structure are mutually coordinated, so that the specific resistance of the mud is greatly reduced, the porosity of the mud cake is higher, the air permeability is better, and the planting performance of the mud cake is better.

[0058] A preferred embodiment of the present application provides an application process of the environmentally friendly mud high-efficiency dewatering conditioning agent, which comprises the following steps:

[0059] S1, after the mud into the mud pool, to the mud pool to add pre-configured flocculating agent solution stirring uniform, low concentration of mud particles flocculation sedimentation to concentrate, supernatant from the upper part of the mud pool effluent pipe discharge, concentrated mud from the mud pool bottom set mud hopper discharge, pumping to the mixer;

[0060] S2, the conditioning agent in the gelling agent, air entraining agent, regulator, dispersant as filter aid A component, and filter aid A component and water with mass ratio (0.5-1) : 1 mixed preparation as solution, using drum mixer stirring 30-60 s, continue to add pore forming agent component as filter aid B component, and fast stirring 15 s-30 s;

[0061] S3, the concentrated mud into the conditioning agent, and pumped to the mud dewatering device, mechanical dewatering, the produced mud cake can be used for backfill or garden soil, tail water can be partially reused for conditioning agent pulp.

[0062] Although the embodiments of the present application have been disclosed as above, it is not limited to the use listed in the specification and embodiments, it can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. An application process of an environmentally friendly slurry high-efficiency dewatering conditioner, characterized in that, The environment-friendly mud high-efficiency dehydration conditioner comprises the following components: a gelling agent, an air entraining agent, a pore forming agent, an adjusting agent and a dispersing agent; wherein the mass percentage of the gelling agent is 80-90%, the mass percentage of the air entraining agent is 0.5-2%, the mass percentage of the pore forming agent is 0.05-0.2%, the mass percentage of the adjusting agent is 5-10%, and the mass percentage of the dispersing agent is 0.5-2%. The air entraining agent is a self-made hyperbranched polyamide-rosin air entraining agent, which is prepared by the following steps: Firstly, dimethylacetamide-dissolved methyl acrylate is added dropwise into dimethylacetamide-dissolved diethanolamine solution in a nitrogen environment at a molar ratio of 1:1, and AB2 monomer is obtained through vacuum distillation; secondly, the core molecule glycerol is dissolved in dimethylacetamide, and hyperbranched polyamide is obtained by reacting with AB2 monomer at a molar ratio of 1:21 with p-toluenesulfonic acid as a catalyst; the generated hyperbranched polyamide is synthesized with rosin acid at a molar ratio of 1:1, p-toluenesulfonic acid is used as a catalyst, the reaction temperature is 90℃, and the constant temperature continues to react for 10h to obtain the hyperbranched polyamide-rosin air entraining agent; The method comprises the following steps: S1, after the mud enters the mud pool, the pre-configured flocculant solution is added to the mud pool and stirred uniformly, the low-concentration mud particles are flocculated and settled to realize concentration, the supernatant is discharged from the upper outlet pipe of the mud pool, and the concentrated mud is discharged from the mud collecting hopper at the bottom of the mud pool and pumped to the stirrer; S2, the gelling agent, air entraining agent, adjusting agent and dispersing agent in the conditioner are used as filter aid A component, and the filter aid A component and water are mixed to prepare a solution by using a drum stirrer at a mass ratio of (0.5-1):1, and after stirring for 30-60s, the pore forming agent component is continuously added as filter aid B component and quickly stirred for 15-30s; S3, the conditioner is added to the concentrated mud and pumped to the mud dewatering device for mechanical dewatering, and the produced mud cake can be used for backfilling or garden soil, and the tail water can be partially reused for conditioner slurry preparation.

2. The application process of the environmentally friendly slurry high-efficiency dewatering conditioner according to claim 1, characterized in that, The gelling agent is composed of steel slag powder, fly ash, red mud and phosphogypsum; the particle size of the steel slag powder is 10-20μm, the fly ash is first-grade fly ash or second-grade fly ash, the particle size of the red mud is 50-200μm, and the particle size of the phosphogypsum, which is a by-product of a phosphate fertilizer plant, is 75-150μm.

3. The application process of the environmentally friendly slurry high-efficiency dewatering conditioner according to claim 1, characterized in that, The pore forming agent is ultra-fine aluminum powder with a particle size of 1-10μm.

4. The application process of the environmentally friendly slurry high-efficiency dewatering conditioner according to claim 1, characterized in that, The adjusting agent is composed of one or more of potassium aluminum sulfate, polyaluminum chloride and polyferric sulfate.

5. The application process of the environmentally friendly slurry high-efficiency dewatering conditioner according to claim 1, characterized in that, The dispersing agent is composed of one or more of sodium hexametaphosphate and sodium dodecyl sulfate.

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